As illustrated in FIG. 24, when the wireless power receiver 200 is connected to the wireless power transmitter 100, the transmission control unit 112 periodically turns off diodes (D1-D4) in a rectifier 24-1 connected to a rear end of the LC resonant circuit 2911 of the wireless power receiver 200, thereby setting PT=0. For example, the wireless power receiver 200 opens the rectifier 24-1 based on the control signal (control signal for setting to PT=0) of the transmission control unit 112 to block a current applied to the LC resonant circuit 2911 of the wireless power receiver 200, thereby setting PT=0.
FIG. 25 is an exemplary view illustrating another circuit for setting PT=0.
As illustrated in FIG. 25, when the wireless power receiver 200 is connected to the wireless power transmitter 100, the transmission control unit 112 periodically short-circuits the LC resonant circuit 2911 of the wireless power receiver 200, thereby setting PT=0. For example, the wireless power receiver 200 turns on switching devices (M1, M2) within the rectifier 25-1 based on the control signal (control signal for setting to PT=0) of the transmission control unit 112 to short-circuit the diodes (D3, D4), thereby short-circuiting the LC resonant circuit 2911 of the wireless power receiver 200.
